1147499091 has 12 divisors (see below), whose sum is σ = 1744735720. Its totient is φ = 724736160.

The previous prime is 1147499051. The next prime is 1147499113. The reversal of 1147499091 is 1909947411.

1147499091 is a `hidden beast` number, since 1 + 1 + 474 + 9 + 90 + 91 = 666.

It is not a de Polignac number, because 1147499091 - 2⁹ = 1147498579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1147499051) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3355090 + ... + 3355431.

Almost surely, 2^1147499091 is an apocalyptic number.

1147499091 is a deficient number, since it is larger than the sum of its proper divisors (597236629).

1147499091 is a wasteful number, since it uses less digits than its factorization.

1147499091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6710546 (or 6710543 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 1147499091 is about 33874.7559548405. The cubic root of 1147499091 is about 1046.9295305920.

The spelling of 1147499091 in words is "one billion, one hundred forty-seven million, four hundred ninety-nine thousand, ninety-one".